Render sequences

bl_utils.py

@@ -11,6 +11,36 @@ from textwrap import dedent
 import bpy
 
 
+class attr_set():
+    """Receive a list of tuple [(data_path:python_obj, "attribute":str, "wanted value":str)]
+    before with statement : Store existing values, assign wanted value 
+    after with statement: Restore values to their old values
+    """
+
+    def __init__(self, attrib_list):
+        """Initialization
+
+        Args:
+            attrib_list (list[tuple]): a list of tuple with the
+        """
+        self.store = []
+
+        for item in attrib_list:
+            prop, attr = item[:2]
+            self.store.append( (prop, attr, getattr(prop, attr)) )
+
+        for item in attrib_list:
+            prop, attr = item[:2]
+            if len(item) >= 3:
+                setattr(prop, attr, item[2])
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, exc_traceback):
+        for prop, attr, old_val in self.store:
+            setattr(prop, attr, old_val)
+
 def abspath(path):
     path = os.path.abspath(bpy.path.abspath(path))
     return Path(path)